Analysis of Shandong Longmen Crane Manufacturers: Precautions for Daily Inspection and Maintenance of Lubricating Oil for Longmen Cranes

1. When checking the lubricating oil, cut off the power supply to prevent electric shock; Waiting for the gearbox to cool down; Open the drain plug and take out the oil sample; Check the viscosity index of the oil. If the oil is visibly cloudy, it is recommended to replace it as soon as possible; For reducers with oil level plugs, check the oil level for compliance and install the oil level plug.

2. When checking the oil level with a gantry crane, the power supply should also be cut off to prevent electric shock; Waiting for the gearbox to cool down; Remove the oil level plug and check if the oil is full; Install the oil level plug.

3. Replacement of lubricating oil. After cooling, the viscosity of the oil increases and it is difficult to drain the oil. The gearbox should change the oil at operating temperature; Cut off the power supply, prevent electric shock, and wait for the gearbox to cool down without any risk of combustion. Attention should be paid to the Longmen crane: when changing the oil, the reducer should still be kept warm. Place an oil pan under the oil drain plug, open the oil level plug, vent, and drain plug, drain all the oil, and install the drain plug. Inject new oil of the same brand, with the same amount as the installation position. Then check the oil level at the oil level plug, tighten the oil level plug and vent.